I am planning installing a aftermarket transmission cooler and the directions say to cut into the exsiting line. Run the rubber to the cooler and back to the other side of the section that was cut out. My question is does it matter which side (line to the tranny) that gets cut? I have never done this. Also it does not look like enough room to install this in front of the rad.

 

The best installation of an auxillary cooler is in the line that goes to the rear of the transmission. This is the return line.

 

Damoperator, you still want to run the hot trans out line thru the radiator cooler as this helps warm up the trans faster, less condensation problems on short driving runs.There is a aluminum cooler, can't think of the name (?) thats 3" in diameter and app 40" long ( can get in different lengths) that has fins on the outside and inside for surface area. This cooler is a aluminum extrusion, early models had the end caps mounted with four little screws, later were welded ends. This cooler can be mounted under the radiator across the frame rails on the bottom frame flange in the airstream. With rubber hoses your asking for failure, get a tube bender and hard pipe everything. Another thing to do is add a spin-on filter after the auxiliary cooler before returning to the trans. This can be mounted inside the right frame rail. For further protection add a strip magnet inside the oil pan and a cylinder magnet ( i have a 3/8" x 2") inside the spin-on filter. If you install a auxiliary cooler in front of the radiator all this does is add more heat to the radiator on a hot day if your pulling hard. You can also add a deep cast aluminum oil pan that has fins on the bottom,( TCI) made them. Heat kills seals and trans fluid.
Carl......o&o>....

 

Thanks for the insight. I will be next week and alot of work to the ol truck will take place.